Voice Over Internet Protocol is a name of a family of technologies that allows transmission of voice over an established network connection. What is usually discussed, though, is Internet Telephony - bidirectional voice (and lately video) transmission over public networks.

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Does mobile phones use TCP/IP? [closed]

Does mobile phones (any kind of mobile phone?) use TCP/IP over radio signals for internet? I would also like to know if they use VoIP for telephony? Please tell me what they use, I'm confused.
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1answer
173 views

Cisco 7962 cable unpluged with POE

I've got a collection of CISCO 7962 IP Phones powered by POE. On some of them I plug them in to our POE switch and I get an error that the Ethernet cable is unplugged. That strikes me as strange ...
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1answer
90 views

IP based public addressing system

We are trying to create an IP based PA system for my institution. Our first hunch is to use an asterisk server with clients in auto-answer mode. Is there any better method, or a more apt open source ...
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1answer
2k views

How can I stream music through VoiP?

What I want is: Stream a music through Teamspeak/Skype/Mumble... while I can talk also. Using Stereo mix is not an option. If I use that, I can't speak, and everyone will just hear themselves. OS: ...
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1answer
355 views

VoIP - need setup ip network without SIP operator

Need to make next one: for ex i'm now in UAE, but i need to make a call to my girlfriend who is in Ukraine. I need to find the way how can i make the connection to my home router and make the call ...
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0answers
757 views

Using Asterisk with multiple phone lines (PSTN)

I've had experience working with Asterisk over VoIP. Did pretty complex stuff with it as long as it had ethernet cables and internet connected. I've gotten used to connecting the box to an ITSP and ...
15
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3answers
5k views

Receive and route phone calls through computer

I volunteered to work for a political campaign. We want to make a unified number (with multiple lines) to put as contact us number. We want it to work like customer support numbers, you call a fixed ...
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1answer
541 views

Two VoIP connections on a single DSL service

I want to connect two SIP phones to my router, alongside one another. One connects to my commercial VoIP service provided by my ISP. The other connects to my business VoIP PBX as a remote extension. ...
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1answer
794 views

Do many of the betamax voip services allow caller id spoofing? [closed]

There are many betamax voip services such as voipgain, voipcheap, voipstunt which ask you to supply a phone number and a destination phone number when making a call (as can be seen in the free trial ...
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1answer
796 views

sip trunking- asterisk(as a sip server) configuration

I would like to create a voip between two clients. I have two asterisks installed and configured on two public ip: Asterisk1 and Asterisk2. I have two clients defined in asterisk1 (client1,client2) ...
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1answer
661 views

What technology do 160by2.com use to send SMS messages [closed]

The India based websites 160by2.com and way2sms.com allow users to signup with, and verify, a mobile number. The user can then use the website to send SMS messages to other mobile numbers with their ...
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1answer
5k views

How do I setup a Polycom phone over internet connection sharing?

What are the Internet Connection Sharing settings that I need so that I can have my Polycom phone utilize my wireless connection? The physical configuration is as follows: Computer accesses the ...
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2answers
256 views

Are there any free voice changing programs for Windows?

I would like to be able to change my voice in real-time while using any chatting software. This would include Skype and any IP-phone software. I found Clownfish for Skype, but was looking for ...
2
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0answers
297 views

Good quality audio conferencing without a headset

I work at home and am doing a lot more video conferencing than I used to. I also use a softphone on the computer for most of my phone calls as well. Particularly when video conferencing I would like ...
2
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2answers
5k views

What is the difference between a VoIP phone and a SIP phone? [closed]

I was under the impression that SIP is a protocol for the initiation of communication between applications, and that the protocol VoIP is for the transmission over an established pair of IP addresses ...
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1answer
104 views

VoiP to connections?

I have been recently playing with AsterixNow and got a nice network set-up with trunks and sips. Outgoing calls go to a VoIP provider that charge me say 2pence per minute for local mobile. I have been ...
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2answers
817 views

How to set up a home SIP Server/Proxy for multi ring?

I have a sip account which only allows one device to be registered. When i'm at home I want incoming calls to be able to ring on multiple devices. All of these devices are connected to the local ...
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1answer
446 views

No XMPP client to talk to, us (partial JID) : asterisk

I am attempting to setup asterisk with my google voice account and not having much success. When I attempt to dial out, I get this error: No XMPP client to talk to, us (partial JID) : asterisk ...
2
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3answers
837 views

Will VPN will slow down VOIP traffic?

If I have a Linux setup with VPN in Paris and a Linux setup with VPN in London, both with high-speed internet, will packet-switching be slower for VOIP than if I didn't use VPN? A few people have ...
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3answers
5k views

QoS in the wireless router for viber

I am connecting my iPhone 3GS to my wireless home network using Viber (VOIP). As I am getting poor sound quality as other in the house are downloading, etc. I'd like to create a QoS rule in my router ...
0
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1answer
780 views

iptables + vpnc + Cisco IP Phone 7941

I have a Linux gateway with kernel 2.6.39 connected to a Cisco ASA 5500 with vpnc. I'm using iptables with masquerading and forwarding to give the LAN access to the tun0 device connected to the VPN. ...
2
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1answer
536 views

What are the internal workings of Google Voice?

I am new to Google Voice and am interested in how it works internally so I have few doubts about it. Is the Google Voice number itself a SIP number? How does Google Voice receive calls from any PSTN ...
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32 views

Videoconferencing software that degrades framerate rather then resolution

Is there a video-conferencing software that can be set to degrade framerate rather then resolution when the intervening connection is slow? I do a significant amount of remote collaborative work. ...
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1answer
582 views

Not able to answer call

Got a Cisco Sipura SPA 941 hardware phone and I am connected to Asterix (most likely) VoIP server of my provider. I am behind a firewall (ADSL) and I have put my phone to the DMZ zone, so it should ...
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2answers
3k views

How to connect a remote IP Phone to our VOIP Network?

We have an IP phone system in our office, and about 8 VoIP phones running on the system. We have a remote worker, who is literally states away. We'd like to connect his phone to our VoIP network, so ...
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1answer
335 views

How can I call from my PC?

Is there a way to just take a number of some web page and dial it? Perhaps route it via my iPhone? The scenario I am talking about is this: let's say I am looking for an apartment on craigslist. ...
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1answer
527 views

Is a static IP required for a Cisco 7000 series VoIP phone?

my girlfriend will begin working from home, and she needs to hook her Cisco 7000 series Voice over IP phone up to our existing DSL account. The phone provider's tech support said that there was no ...
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1answer
347 views

Hooking up iMac, DSL modem, router, VoIP box and ROKU

I want to hoop up iMac, DSL modem, router, VoIP box and ROKU. How do I begin? I've read to go from wall to modem to router to VOIP, then I guess I'd just get another cable to hook the ROKU to the ...
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1answer
399 views

Skype dial out shortcut

I've created shortcut on desktop which looks like this "C:\Program Files\Skype\Phone\Skype.exe" "/callto:echo123" However, whenever I run the shortcut I have firefox open with Launch Application ...
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2answers
1k views

One way broadcast of SIP call using Wowza

I have a POTS conference call taking place and I want to live stream the audio over the internet using Wowza. My plan is to dial into the conference call essentially bridging the audio onto the Wowza ...
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3answers
4k views

Replacing my home phone with a VOIP solution?

I'm considering replacing my expensive home phone line with a VOIP option, but want to make sure I'm prepared for what to expect. I have a high-speed internet connection, and a (nearly) always-on ...
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1answer
419 views

Ohphone - where to download for CentOS/Fedora distributions?

I'm using a project which mentioned I need to used ohphone. However I can't find any Fedora/CentOS versions of ohphone that work with OpenH323. Does anyone know where I could find that?
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1answer
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Is it possible to run Skype on my NAS or DD-WRT?

Ok so here is my setup: Qnap NAS > TS-210 Gigabit router/switch with DD-WRT (big-generic) multiple PC's 1 usb-to-phone box > Trust ST-1200 Internet Phone Station (this is pretty old...) 1 phone ...
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1answer
392 views

How to install H.239? From the H323plus or openh323gk or where?

I have downloaded this, but i dont see in the ./configure output anything related to h.239. Any idea? downloaded ex: http://waix.dl.sourceforge.net/project/openh323gk/Sources/2.3.3/ config.status: ...
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1answer
354 views

Skype call recording with real-time annotation / markers?

There are plenty of applications to record Skype calls, but I am looking for one that allows you to place "chapter markers" or any sort of bookmarks or annotations at certain points in the call in ...
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1answer
2k views

Windows 7: How do I listen to music on the computer's speakers, and take calls over a headset, without having to unplug/plugin the headset?

I like hearing most audio over my computer's speakers. I like taking calls using a wired headset. I have a random HP desktop PC that came pre-installed with Windows 7, 64. It has Realtek Audio and ...
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2answers
248 views

Windows utility to monitor VoIP?

I no longer have a landline and rely on a VoIP provider to call/receive calls through the PSTN. It generally works well, but sometimes, end-users complain of low call quality, even when my ADSL line ...
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2answers
3k views

How to make calls from a remote computer through my land-line phone?

I have a great land-line phone plan; I barely use all of the minutes. Is possible to add a modem/server system so that I can make calls through this line via the internet when I am away? What kind ...
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3answers
644 views

VoIP (on a landline) vs SIP (on mobile)? What do I miss not using VoIP

A bit of a background. Thinking of moving away from a softphone, which I predominantly use for a long distance calls, a few months ago I got myself a Linksys SPA3000, got it configured (was not easy, ...
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1answer
2k views

program to dial land phone, enter password and record?

is there a program for Windows (or linux command line) platform that would do below from a command line? call a land phone number (using my SIP account) enter password record the call finishes after ...
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2answers
4k views

How to set up personal VoIP server?

I'm looking to run my own VoIP server so I can make and record calls and the like. I need to basically bind a phone number to the server and me able to call it and use it as a regular phone. I'm new ...
0
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2answers
655 views

Connect a PC to PSTN network

I have a land-line phone through my ISP. I use it to call land-line phones free of charge like phones in Europe etc. what I want to do is that I want to use this service from any PC so I can call any ...
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1answer
35 views

How to split registration and media?

I have a SIP project. Where i will have SIP server running. Server will do following: will only do routing and receive incoming calls But the audio/video will be peer 2 peer Can this be done with ...
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0answers
367 views

Voice activated and silence deactivated audio recording software

I plugged my PBX into the microphone hole in my PC's sound card, in order to record all activity on my PBX in MP3 format. I am using the software called "Recordpad", by NCH. The problem is the ...
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1answer
649 views

free voice activated sound recording software

I connected my PBX to the sound card of my Windows XP PC, using a special interface hardware. I want to record all the sound into MP3 format. Please reccomend a free software that can record only ...
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2answers
4k views

TeamSpeak 3 Disconnects

I've recently had a few random TS3 mass disconnects and I'm am curious to know where I may find any applications that can help me determine the cause of any types of TS3 server disconnections as we ...
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3answers
151 views

Go for VoIP or Skype? [closed]

I'm looking to implement a communication system which will cut down our company's costs. I was suggested to go with VoIP or simply Skype. Can anyone suggest why one would be better than the other? We ...
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2answers
9k views

Softphone for 64-bit Windows 7 to make SIP calls without registering with a SIP proxy?

We have test tools that require us to call SIP addresses like localhost:5061. I used to use SJPhone on Windows XP, and an older version of X-lite, which both worked fine, and didn't require the SIP ...
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4answers
2k views

How do I see how much bandwidth my VoIP phone takes?

I have a VoIP Phone with Vonage where highspeed internet service with rogers. More recently my internet bandwith usage has gone up even though I am not suring internet that much (2.5 - 3 GB per day). ...
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2answers
269 views

Call someone on the same network using VOIP calls

Is there a VOIP software where I can call a friend on the same local network? I should be able to add friends via their local IP addresses and provided they have the same software installed, be able ...